TANDY/RADIO SHACK

MEMORY EXPANSION ADAPTER (250-4027)

Card Type	Memory
Maximum Onboard Memory	8MB DRAM
Data Bus	Tandy 3000NL memory expansion bus

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Computer has one memory expansion slot	E1	Pins 2 & 3 closed
	Computer has two memory expansion slots	E1	Pins 1 & 2 closed
Note:E1 may not be present on all versions of this card.

DRAM CONFIGURATION
Setting	Bank 0	Bank 1	Bank 2	Bank 3
512KB	(2) 256K x 9	None	None	None
1MB	(2) 256K x 9	(2) 256K x 9	None	None
1.5MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	None
2MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9
2MB	(2) 1M x 9	None	None	None
2.5MB	(2) 256K x 9	(2) 1M x 9	None	None
3MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	None
3.5MB	(2) 256K x 9	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9
4MB	(2) 1M x 9	(2) 1M x 9	None	None
4.5MB	(2) 256K x 9	(2) 1M x 9	(2) 1M x 9	None
5MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	(2) 1M x 9
6MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	None
6.5MB	(2) 256K x 9	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9
8MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9
Note:The memory installed on the mainboard must be removed in order to use this card. Within each bank, the SIMMs must be the same size. Banks may contain either 256K or 1M SIMMs.

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